TeleGeography: Ethernet VPLS, EoDWDM interest grows, while IP/VPN expansion dips
HISTORICAL SPACE FREQUENCIES. The first satellite to orbit the Earth was Sputnik 1, launched by the Soviets in October 1957. It carried two radio beacons on frequencies of 20.005 and 40.01 MHz. The Soviets continued to use frequencies around 20 MHz and even some around 15 MHz for many subsequent missions. This tends to be used for uplinks of the satellites that downlink in the 137 - 138 MHz band. 2  149.95 - 150.05 MHz. 3  This is used by satellites providing positioning, time and frequency services, by ionospheric research and other satellites.
Making the world better, one answer at a time. The GPS satellite moves with the speed of 7000 km/hour and completes one orbit around the Earth at an altitude of 20,200 km in about 12 hours.ery easily. The GPS receiver measures how long it takes a certain   radio signal to travel from the GPS satellite(s) to itself, and from   that, the receiver calcu â¦ lates the distance. It can do that because it   knows precisely how fast the radio signal travels.